I'm trying to draw an image in grayscale. This is my code:
Java Code:
public void paintComponent(Graphics g) {
super.paintComponent(g);
setOpaque(true);
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
Graphics g1 = image.getGraphics();
g1.drawImage(CardData.CARD_ART[cardID], 0, 0, null);
g1.dispose();
setOpaque(false);
} mh_sh_highlight_all('java');
For some reason, nothing displays.
I have a greyscale image with alpha. I also have a colour. I want to change that greyscale image to the colour specified, with black remaining black and white being the specified colour, and the different shades of grey between becoming the shade of the specified colour.I've got a couple of different thoughts about how to solve it myself, but I rather hope there's an easier way.
Solution one would be to use a BufferedImage and just use getRGB/setRGB excessively.The second solution would be to use the above and cache the result. Given that there can be up to 10 different colour schemes, and up to approx. 2000 different images, this can, in the end, become excessively memory-hogging (although the general case would likely be 3 colours and perhaps a hundred or two images). It would also mean I'd have to loop through all images whenever the user changes the colour.
Is there a magical third solution that can translate a greyscale image to colour on-the-fly that's fast enough to run hundreds of thousands of times per second? No code available since this is just in the thought process right now.
I have the program working where the image is converted to grayscale but I get the following error when trying to convert from grayscale to sepia.
java:36 error: '. class' expected
red = Math.min(int(red * 1.08), 255);
java:36 error: illegal start of expression
red = Math.min(int(red * 1.08), 255);
import images.APImage;
import images.Pixel;
[Code] ....
I am trying to draw an image unto the screen, however, nothing appears...
Java Code:
private ImageIcon i = new ImageIcon("image.png");
private Image image;
...
image = i.getImage();
...
g.drawImage(image, (int)(x - r), (int)(y - r), null); mh_sh_highlight_all('java');
Am I doing it right? The program gives me no error, it's just that when I try to draw it, I see nothing.
Gyazo - e5663e8da42ac46a642895d72836b933.png
As you can see I have specified a file path, as it is needed to draw the image.
The image "sun" is in a certain folder inside the directory of my jar file.
But If I were to send the whole package to my teacher to review. The file path would still remain the same, local to my computer making the image, unloadable.?
[ATTACH=CONFIG]27j.jpg49[/ATTACH]Hello,
I'm having the hardest time getting a program to compile. I'm beginning to think I've downloaded the incorrect version of turtle graphics. This symbol looks foreign and I'm unsure how to find a solution. I have fixed some of the errors since this last picture but I will write out my code. The program takes a photo and converts to gray scale then to sepia
import images.APImages;
import images.Pixel;
import java.util.Scanner;
public class sepia{
public static void main(String [] args){
[Code] ....
Sir, I'am new to Swing Programming. I have to create an application where an image is displayed on one Label. The same image has to be split in parts and stored in database pert wise. Later the user has to retrieve the entire image by viewing a small part of the image. I have already displayed the full image on the Label, now i don't know how to split the image and store it part wise in the database.
View Replies View RelatedI stored an image into MySQL database using swings and hibernate but I am struggling to retrieve that image from MySQL database and display same image in the jTable cell and same as on jLabel whatever I retrieve from the database using swings and hibernate .
View Replies View RelatedI had string url for image in mysql database and I want show image in mu jsp file bu I can't.
<c:forEach var="urun" items="${listUrun.rows}">
<tr>
<td><c:out value="${urun.kitapresim}" /></td>
<img src="<c:url value="${urun.kitapresim}" /> " width="270" height="190"/>
URL...
I successfully added a background image on the Panel but I can't create my JButton image on top of my background image.
ImageIcon piano = new ImageIcon("src/img/piano_backgrd.png");
JLabel backlabel = new JLabel(piano);
panel.add(backlabel, new Integer(Integer.MIN_VALUE));
backlabel.setBounds(0, 0, piano.getIconWidth(), piano.getIconHeight());
JButton volup = new JButton(new ImageIcon("src/img/volup.png"));
volup.setLocation(10, 0);
panel.add(volup);
I have to write a program for class that basically uses Paint Component to draw a bunch of rectangles to look like a building then have them change color randomly. I am stuck I can't figure out how to make it draw the rectangles in rows and columns to look like the building i can make it display multiple squares randomly however but thats not the assignment.. here is my code
package labBuilding;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JPanel;
@SuppressWarnings("serial")
public class Building extends JPanel {
[code]....
import java.awt.*;
public class Program5 {
public static void main(String[] args) {
DrawingPanel panel = new DrawingPanel(300,500);
panel.setBackground(Color.white);
Graphics g = panel.getGraphics();
g.setFont(new Font("Helvetica", Font.PLAIN, 12));
double ball = 10;
[code]....
I'm fairly new to Java and am having a hard time with this particular assignment. The program runs and shows up on the drawing panel fine but I can't get the lines quite right.Capture.jpg
I've got a question about drawing animations in Java (SWT). I try to draw an animation of some process.
When i use canvas.redraw() it seems like program firstly erases everything that has been drawn and then draws again.
My program draws about 1000 of rectangles per time step so animation doesn't looks smooth - it blinks all the time and I can't avoid drawing that many rectangles.
Is there a way to make it look smoother (for example to paint new objects over old ones, without erasing them)?
I won't paste code, it's rather large.
I have a problem which can't solve it for 2 days search. I need to draw 3d shapes , i downloaded all packages and set an example code and run it ...
Exception in thread "main" java.lang.UnsatisfiedLinkError: no J3D in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java :1886)
at java.lang.Runtime.loadLibrary0(Runtime.java:849)
at java.lang.System.loadLibrary(System.java:1088)
[Code] ....
solve my problems regarding drawings on my JPanel(Transparent panel).My Jframe & other components are created by netbeans GUI builder & the transparent panel is created manually but one problem is that i can't impose this Transparent panel into JFrame like it is attached to the JFrame.Another problem is that,i want that transparent panel size should be counted in inch like my attached picture(TOTAL SIze 36 inch) & also when i clicked on that panel those mouse points highest distance should be measured in Inch.How can i do all of these three task??
View Replies View RelatedI have a question about the execution of code to draw images relative to code that comes after that. I don't normally do this sort of thinghere's the problematic code:
int stn = 0;
while (stn < 10)
{
glb1.xOfText += 20;
glb1.yOfText += 20;
gc1.drawImage(glb1.img1 , glb1.xOfText , glb1.yOfText);
TimeKeeper.pause(500);
stn++;
}
Where glb1 is a final reference to an object that holds common data for the game.while its x and y values say they are for text, they are also used for image placement (at least during this testing phase.)
gc1 is the "graphics context" of the canvas that the images are being drawn on.
The person who wrote this said, "When the attached code is run, the calls to TimeKeeper.pause(500), which in turn call Thread.sleep(500), are all executed in row, and then the results of drawing the image 10 times is displayed. (I know because some of the previous image pastes left some visual data behind.)"
I recall from reading about drawing graphics (a long time ago) that drawImage() could take time, but I don't know why the thread does not indeed sleep between calls to drawImage().
how to phrase the question. I created a small applet in java.. it allows me to move a toon around a blank applet window. I am using four gif files that have a walking animation in them. The issue i am having is after moving around the gif just flashes in and out really quickly.. when i start the program, moving up and down seems to be working perfectly fine, but the moment i move left or right it starts messing up for all directions. here is my code.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class CharactorMove extends JApplet implements KeyListener
[code]....
I am having issues with drawing shapes from bottom right to top left.
Issue:
- g.drawRect() will show like I am calling g.fillRect()
- other shapes will not even show the shape in that area
Needs:
- g.drawSHAPE needs to show and not be filled unless I have my fill checkbox selected
The Program:
- Create a JFrame with a draw panel and a component panel
- have a combobox with shapes that, when selected, will draw that shape in the draw panel
- have a button that, when clicked, will launch JColorChooser to change the color of the drawn shape (draw panel is set to black)
- have a checkbox that, when checked, fills the shape
- have mouse listeners to adjust X and Y and will instantly update the shapes size to where you drag/click/press/release
Code for my drawRect():
Java Code:
// if statement to check if mouse drag X is less than starting X
if(x2 <= x){
if(emptyORfill.isSelected()) // emptyORfill is my JCheckBox
g.fillRect(x2, y, x-x2, y2-y); // x-x2 is the same as Math.abs(x2-x)
else
g.drawRect(x2, y, x-x2, y2-y);
[Code] .....
This is just for my Rectangle. This will show a filled rectangle when both mouse drag X and Y are less then the starting X and Y. If I take this fully functional code and adapt it to drawRoundRect(), the round rectangle wont even show the shape when mouse drag X and Y are less than the starting X and Y but will be fine if one or the other is less than the starting X or Y. NOTE: This same exact code worked on my classmates laptop in her program, but in my program on her laptop it did not. She took out the "else" in the else if's and just made them if statements all the way down and it worked on her laptop in my program, but the same "fix" did not work on my pc.
My mouse listener just sets X and Y values in my Shape class that updates my shape methods. I have an item listener for my comboBox that sets default values when a new selection is made and enables/disables editable on my fill checkbox for certain shapes. My action listener looks for the button click and the checkBox click.
I use a program called eclipse. I want to know how to build a house with the program. We use a pen in java. It is a drawing tool. I dont know how to do it.
View Replies View RelatedI've just started working on a program and I'm already having difficulties with the program. I can't get the background color to change from the basic gray color.
Java Code:
import javax.swing.JFrame;
import javax.swing.WindowConstants;
import java.awt.*;
import java.lang.Object;
import java.awt.Color;
public class FrameDemo{
[Code] .....
I am trying to make a GUI that allows the user to input the NumberLink puzzle (through mouse action events), and then, displays the puzzle in a grid with features to draw a path, and undo it. This is almost exactly the same functionality as in Numberlink on Nikoli
1. In my project, I have a Stage in which a setup scene prompts user for rows and columns (to take size of puzzle),
2. Then, it generates an empty grid (I'm thinking of using a GridPane here), and the user clicks the squares to enter the numbers into the square. this phase isnt a problem if I use text fields and mouse listeners and store info in a grid... the next phase is what I'm stuck at... unless I know exactly how to do that, I cant make progress...
3. In the third stage, I have to display the numbers to the user just like on the Nikoli site (the highlighting number pairs on mouse hover is a necessary feature too, which I think I can handle with CSS).. and the user should draw paths between the numbers, just as on that site ( I thought VLineTo and HLineTo classes would be suitable.. but I'm not sure, and cant find any alternatives) .....
So with this in mind, I made FXML based dummy gui layouts to test if my ideas work... And I cant get the GridPane to have lines drawing atop it (meaning, I cant place Line objects like HLine on top of the grid panes).... is there any other way to do what I need to do ? I also thought of making canvases in a grid (each square is its own canvas)
How I can implement a user inputted path drawing ??
I have to do an assigment using Swing, where I have to make a Board(extends JPanel) and add multiple instances of moving elements to it, with following requirements:
By adding a new object to the Board, the others must not slow down. Also the user interface must not be blocked by the moving objects. So, the movement of the objects must be handled in a separate thread.
and
The application must support adding lots of objects, so it is not okay if every object has its own thread, as this would take too many resources. Design the application in such a way that it uses a constant number of threads, meaning that the number of threads does not grow when adding more objects.
The question is:
How to do this thing with constant number of threads?
The program is where you will click anywhere in the jframe and it will draw a new rectangle. I have altered the code given to us but the problem that I am having is the fact that when I click the rectangle will always be connected to the upper left hand part of the jframe, no matter where I click. The program should create rectangles of the same length and width wherever you click. Here is what I have. I believe I have to change something in the addRectangle method, but nothing that I have tried works.
Java Code:
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
import java.util.ArrayList;
public class RectangleComponent2 extends JComponent
[Code] .....
Ok. So I have decided that taking a step back is better than trying to go forward blind. I am trying to come to an understanding of how java draws simple shapes, but continue to run into problems. I have now gone ahead and directly copied code from a book just to see if it will work. It does not. The code is just supposed to make a smiley face, but when I run it I get a bunch of errors. I have attached the code that I am trying to run and the error report at the bottom.
Java Code:
import javax.swing.JFrame;
public class DrawSmileyTest
{
public static void main( String[] args );
DrawSmiley panel = new DrawSmiley();
JFrame application = new JFrame();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
application.add( panel );
[Code] ....
9 errors found:
File: /Users/brad/Documents/Courses/Mobile App Development/Java Intermediate/Assignments/Assignment 1/DrawSmileyTest.java [line: 10]
Error: /Users/brad/Documents/Courses/Mobile App Development/Java Intermediate/Assignments/Assignment 1/DrawSmileyTest.java:10: <identifier> expected
[Code] .....
rJ38Sk0.jpg8xPkese.jpg
So I'm supposed to draw this flag using java grids, here is what i currently have.
int height = grid.getHt();
int width = grid.getWd();
//Paint everything Blue
for(int c=0;c<height;c++){
for(int d=0;d<width;d++){
grid.setColor(c,d,Color.CYAN);
[Code] ....
at size 9 it looks fine, but at size 12 it is missing a black dot. How can I solve this?
I am trying to draw at my mouse a certain shape that I have set. I defined some shapes where they extend shape and draw circles and stuff. But when I click on panel it seems the paint doesnt put anything there. Debugger tells me shapes are saved though.
public void mouseClicked(MouseEvent e) {
currentX = e.getX();
currentY = e.getY();
Shape newShape = owner.currentBrush.clone();
picture.add(newShape);
repaint();
[Code] ....